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Change User Interface Density in Firefox

As you may already know, Firefox 57 comes with a new UI, known as "Photon". The default appearance of the browser includes a default theme with a dark blue title bar. There are few themes which come pre-installed with the browser. In addition to themes, Firefox allows changing the user interface density. In this article, we will see how it can be done.

Firefox 57 is a huge step forward for Mozilla. The browser features a new engine "Quantum". It was a difficult move for developers, because with this release, the browser drops support for XUL-based add-ons completely. All of the classic add-ons are deprecated and incompatible, and only a few have moved to the new WebExtensions API. Some of the legacy add-ons have modern replacements or alternatives. Unfortunately, there are plenty of useful add-ons which have no modern analogs.

The Quantum engine is all about parallel page rendering and processing. It is built with a multi-process architecture for both CSS and HTML processing, which makes it more reliable and faster.

You can enlarge the user interface of the browser to make it more compact by changing its density. Here is how.

To change user interface density in Firefox, do the following.

Click the hamburger menu button and click the "Customize" item.

Click on the "Density" item at the bottom of the "Customize" pane.

Click on either Compact,Default or Touch item in the drop down list according to what you want. Compact is the smallest UI type, Touch is the biggest one.

About Sergey Tkachenko

Sergey Tkachenko is a software developer from Russia who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Facebook, Twitter or Google+.